Well duh. This is a camera forum on a Mac site, what do you expect?
Pretty dumb place to ask any kind of photography question: the chances are you'll get 10 responses from pixel counters / equipment wankers for every 1 from someone who uses their camera to, you know, take photographs.
The responses that do make me laugh are the ones that try to justify their own poor decisions and persuade the suckers to follow suit. "I bought a D90 and some ****** Sigma glass and therefore so should you, even if the D90 has been superceded and Sigma produced the cheapest and nastiest glass you can buy." The thing is, this guy doesn't care because he doesn't take any photographs anyway.
You were one of the one's I was referring to. But it's all good.
SLC